Which ion has maximum magnetic moment?

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Question

Which ion has maximum magnetic moment?

Options:

A . V+3

B . Mn+3

C . Fe+3

D . Cu+2

Answer: Option C
:
C

\begin{matrix} S . N o . & O u t e r c o n f i g u - r a t i o n & N o . o f u n p a i r e d e^{-} & C o l o u r o f i o n & M a g n e t i c m o m e n t V^{+ 3} & 3 d^{2} & 2 & G r e e n & 2.76 M n^{+ 3} & 3 d^{4} & 4 & V i o l e t & 1.9 F e^{+ 3} & 3 d^{5} & 5 & Y e l l o w & 5.96 C u^{+ 2} & 3 d^{9} & 1 & B l u e & 1.9 \end{matrix}

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